Heat sink



FIG. 1 is a perspective view of a heat sink, in accordance with the present invention.

FIG. 2 is a front view of the heat sink of FIG. 1.

FIG. 3 is a rear view of the heat sink of FIG. 1.

FIG. 4 is a right side view of the heat sink of FIG. 1.

FIG. 5 is a left side view of the heat sink of FIG. 1.

FIG. 6 is a bottom view of the heat sink of FIG. 1; and,

FIG. 7 is a top view of the heat sink of FIG. 1. 

The ornamental design for a “heat sink,” as shown and described. 